The problem is that the way in which EZY operate the Flight Data Monitoring system (FLIDRAS), can amount to catch 22 where confidentiality is concerned.
If you have exceeded a parameter/limitation (or landed off an unstable approach) and do not file an Air Safety Report (ASR) you will receive a 'counselling' phone call from a member of the FLIDRAS team, this is in confidence and provided you are suitably contrite will not go any further unless it is deemed serious. If serious, the union will be consulted and agreement gained before the data is released to management.
The problem lies where an ASR is filed. In EZY that action of filing an ASR explicitly authorises release of the flight data related to the event. It is the duty of the base captain (the pilot's line manager) to investigate all ASR's.
In a nutshell if you file an ASR, management get to see FLIDRAS data, if you don't file management may also get to see it.
ASR's should not be investigated by base captains but by the safety department. IMV the current policy hardly encourages pilots to file ASR's, however don't forget that according to easyjet, safety is their first priority.